max5203aeubt Maxim Integrated Products, Inc., max5203aeubt Datasheet - Page 8

• Manufacturer Part Number: max5203aeubt
• Description: Low-cost, Voltage-output, 16-bit Dacs With Internal Reference In ?max
• Manufacturer: Maxim Integrated Products, Inc.

The MAX5200–MAX5203 serial 16-bit, voltage-output
DACs are easily configured with a 3-wire serial inter-
face. These devices offer full 16-bit performance with
less than ±20LSB integral linearity error and less than
±1LSB differential linearity error, thus ensuring monoto-
nic performance. Serial data transfer minimizes the
number of package pins required. The MAX5200–
MAX5203 include control-logic circuitry, a 16-bit data-in
shift register, and a DAC register. In addition, these
devices employ a precision-bandgap reference and
trimmed internal resistors to produce a gain of 2V/V,
maximizing
MAX5200–MAX5203 output is buffered and the full-
scale output voltage is 2
The MAX5200–MAX5203 feature a hardware reset input
(CLR) that, when pulled low, clears the DAC output to
zero code 0000H (MAX5201/MAX5203) or resets the
DAC output to midscale code 8000 hex (MAX5200/
MAX5202). For normal operation, connect CLR to V
The MAX5200/MAX5201 (+5V supply) include an inter-
nal reference of 2.5V while the MAX5202/MAX5203
(+3V supply) include an internal reference of 1.5V. The
DAC output range is from 0 to 2
external circuitry from this reference. To improve DAC
output noise performance, bypass with a low leakage
0.1µF minimum capacitor to AGND.
Low-Cost, Voltage-Output, 16-Bit DACs with
Internal Reference in µMAX
8
_______________________________________________________________________________________
PIN
10
1
2
3
4
5
6
7
8
9
the
NAME
AGND
DGND
LDAC
SCLK
OUT
CLR
V
REF
DIN
CS
DD
output
Detailed Description
✕
V
Reset DAC Active-Low Input. Pull CLR low to reset the DAC output to midscale output (8000 hex) for
MAX5200/MAX5202 and to zero-scale output (0000 hex) for MAX5201/MAX5203. For normal
operation, connect CLR to V
Reference Voltage Output. Provides a +2.5V (MAX5200/MAX5201) or +1.5V (MAX5202/MAX5203)
nominal output. For improved noise performance, bypass with a minimum 0.1µF capacitor to AGND.
Analog Ground
Positive Supply Voltage. Bypass V
capacitor.
DAC Output Voltage
Active-Low Chip-Select Input
Load DAC Input
Serial Data Input
Serial Clock Input. Duty cycle must be 40% to 60%.
Digital Ground
REF
voltage
Internal Reference
.
✕
V
REF
. Do not drive
swing.
DD
DD
The
.
.
DD
to AGND with a 10µF capacitor in parallel with a 0.1µF
The MAX5200–MAX5203 digital interface is a standard
3-wire connection compatible with SPI/QSPI/
MICROWIRE and most DSP interfaces. All of the digital
input pins (CS, SCLK, DIN, CLR, and LDAC) are TTL
compatible. SCLK can accept clock frequencies as
high as 10MHz for a +5V supply and 10MHz for a +3V
or +3.3V supply.
One of two methods can be used when interfacing and
updating the MAX5200–MAX5203. The first requires
three digital inputs: CS, DIN, and SCLK (Figure 2). The
active-low chip-select input (CS) enables the serial
Figure 1. MAX5200–MAX5203 Simplified Functional Diagram
SCLK
LDAC
CLR
DIN
CS
FUNCTION
CONTROL
LOGIC
BANDGAP
REF
REF
SERIAL INPUT REGISTER
16-BIT DATA LATCH
16-BIT DAC
DGND
V
DD
Pin Description
Digital Interface
MAX5200–
MAX5203
OUT
AGND